Category Archives: Linux

Linux, what.

Spacewalk as a viable replacement for Satellite

[Edit- mrepo tutorial has been posted. See here…]

Okay, a Primer, first.

Spacewalk is an open-sourced software suite for maintaining a number of Red Hat based servers. The Commercial version is Red Hat’s Satellite Server. SatServer has a few more bells and whistles, and the added benefit of support from the big Red Hat themselves, but also costs about $50,000 a copy. (Okay, I realize that number is off, depending on your situation, but my point remains. It’s expensive.)

What does it do? A lot, actually. You can use it for building new servers, and maintaining existing Continue reading Spacewalk as a viable replacement for Satellite

Oh the joys of storage work in a network you’ve never actually seen.

Bad idea: SAN storage on iscsi that mounts after fstab.

Worse idea: labeling them with /dev/sdX tags so they look like normal disks.

Worser idea: telling someone you’re adding disks to the raid array when you’re actually not- you’re adding it to a SAN the engineer still doesn’t know exists.

Mind numbingly worst idea: not having start/stop scripts on your Oracle RAC server because the whole “unable to mount the iscsi” drives configuration problem. Even with that whole mount/unmount problem- you SHOULD STILL HAVE A STOP SCRIPT so you don’t reboot a server with a live DB running.

On the need for structure in a budding Enterprise environment…

I am not an “organized” person. I like to go with the flow, be spontaneous, and shoot from the hip. I fully acknowledge that is not always the best way to be in a profession such as computing, but it is what it is. In my professional capacity, I am a proponent of organization on a much larger scale than I could ever do in my personal life. I think Christy is to blame for that. :)

At any rate, I started my new job in May, and was thrust into a position where there are 6 datacenter-ish locations (5 DC’s and HQ has a server room with a fair number of live boxes)… still a far cry from the 3,000 Linux boxes we had at Fidelity. Continue reading On the need for structure in a budding Enterprise environment…